.loading{
    position: absolute;
    float: left;
    margin: 20% 48%;
    width: 80px;
    height: 40px;
}
.loading span{
    display: inline-block;
    width: 8px;
    height: 20px;
    border-radius: 4px;
    background: lightgreen;
    -webkit-animation: load 1s ease infinite;
}
@-webkit-keyframes load{
    0%,100%{
        height: 40px;
        background: lightgreen;
    }
    50%{
        height: 70px;
        margin: -15px 0;
        background: lightblue;
    }
}
.loading span:nth-child(2){
    -webkit-animation-delay:0.2s;
}
.loading span:nth-child(3){
    -webkit-animation-delay:0.4s;
}
.loading span:nth-child(4){
    -webkit-animation-delay:0.6s;
}
.loading span:nth-child(5){
    -webkit-animation-delay:0.8s;
}
